Fountain-pen.



No. 798,655. PATENTED SEPT. 5, 1905.

W. BULLES. FOUNTAIN PEN.

APPLICATION FILED DBO.16, 1903.

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NETE@ lVILLIAH BULLES,

OFFTC/ll.

FOUNTAlN-PEN.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed December 1G, 1903. Serial No. 135,346.

Be it known that I, iViLLiau BoLLns, of Toledo, county of Lucas. and State of Ohio, have invented certain new and useful VImprovements in Fountain-Pens; andi do hereby declare that the followingI is a full, clear, and exact description of the invention, which will enable others skilled in the art to which itappertains to make and use the same, reference being had to the accompanyingdrawings, and to the figures of reference marked thereon, which form part of this specitication.

My invention has reference to fountainpens; and it has for its object in general the improvement of certain details whereby the construction is greatly simplified and cheapened and the operation of the pen greatly increased in etticiency.

The invention has reference in particular to fountain-pens ot' the self-filling kind employing a collapsible tube or ink-reservoir, of elastic material, adapted to be collapsed by pressure upon the walls of the tube, and the specilic improvement herein described and claimed embodies novel means for securing longitudinal bars upon the elastic tube, as well i as improvements in the 'form and arrangement of the bars, the means employed for fastening said bars being' simple, inex pensive, and effective.

ln carrying out my invention l employ the novel combination, arrangement, and details of construction hereinafter shown, described, and claimed, reference being had to the accompanying drawings, which form part of this specification.

ln the drawings, Figure l isa longitudinal sectional elevation of a `fountain-pen embodying my improved construction. Fig. 2 isa longitudinal section of the collapsible inkreservoir shown in Fig. l, disclosing' the relation of the bars thereto with the preferred means for securing the same in position. Fig. 3 isan elevation of au ink-reservoir, showing modified forms of bars in position thereon. Fig. 4 is a perspective view of abardetached from the reservoir, the same being provided with a single longitudinal rib. Fig. 5 is an enlarged transverse section through a bar.

constructed of sheet metal and formed with crimped ribs.

Referring' to the details ot' construction, l is the tubular pen body, shell, or holder, closed at one end and having' the opposite end fitted with the usual tapered nozzle Q, provided with a pen-point and Yfeed-bar.

3 is a cap of the usual form, detachably sccured upon the holder by means of a tapering joint. Adapted to be inserted into the cap and securely held in place therein after insertion is a washer t, adapted to contact with the forward end of the. nozzle. This fasher is preferably constructed of resilient material, such as semihardened rubber, and is preferably held in place by an annular groove 5, Vformed in the cap.

iVlien the cap is in place upon the penholder, the nozzle will Contact with the washer contained therein, so that any ink discharged from thc nozzle or any vapor arising therefrom will be isolated and held from being deposited upon the sides of the nozzle. At a point between the washer and the connection with the pen-holder the cap is provided with an orifice 12 to permit air to freely enter the space surrounding the nozzle, the latter being as a consequence perfectly dry when the cap is removed from the holder.

3 indicates the elastic tube or ink-reservoir, adapted to becollapsed by pressure upon its walls, the same being withdrawn from the pen-holder when it is to be lilled with ink. The reservoir is closed at one end and at the other is attached to a reduced extension provided at the inner end of the pen-nozzle. Secured upon the sides of the reservoir are longitudinal strips or bars .1i of metal, hard l rubber, or any other suitable material adapted for the purpose. These bars are preferably secured in place by means of a suitable cement or adhesive, being carried 'by the reservoir when the latter is withdrawn from or inserted into the holder for the purpose of filling. The bars may be plain, as shown in Fig. 3, and provided with inwardly-bent ends, as at l5. to facilitate the insertion of the rcservoir into the holder. 'lhey may also be slight-ly arched in cross-section to conform to the outer curvature of the reservoir, this form permitting the employment oll metal bars not easily bent by pressure exerted at a point between its ends. ln Fig. -L is illustrated a bar provided with a single longitudinal rib '16, raised upon the outer surface of the bar. The bars may also be constructed of Sheet metal suitably crimped to provide ribs upon the outer surface thereot, as shown in Fig. 5, this construction pern'nttlng the ICO employment of sheet -metal of very light gage, insuring great strength, with rigidity and a minimum tendency to bend under pressure, especially where the material employed is sheet-steel. Although any of the various forms of bars already described may be advantageously employed for the purpose of collapsing the ink-reservoir, the same being attached thereto by cementation, the preferred means which I employ for fastening the bars upon the reservoir is illustrated in Figs. 1 and Q. At the ends of the reservoir are provided encircling' bands 17 and 1S, of soft rubber preferably, and the bars carried bythe reservoir arc shouldered at the ends and are adapted to be secured in place by said bands. In practicing this construction previous to the curing of the soft-rubber reservoir the bars are placed in proper position thereon, after which the bands 17 and 18 are made to adhere to the reservoir, the ends of the bars being secured beneath the same. The operation of curing effects the union of the bands with the walls .of the reservoir, resulting' in a homogeneous structure, the inner faces of the bands at the same time adhering to the sides of the reservoir. It is apparent that the resiliency of the walls of the reservoir will be greatest at the ends encircled by the bands 17 and 1S, the walls being thickest at these points, and that as a resultv thereof the bars attached to the reservoir will spring apart with greater force when the pressure thereon is released than if they were attached to an ordinary rubber reservoir having walls of uniform thickness throughout. The advantages of this construction are obvious.

It is apparent that during the process of manufacture the reservoir may be provided with suitable pockets at the ends, into which the ends of the bars are adapted to be inserted, and that in addition to the pockets for securing the bars in place the latter may also be cemented to the sides of the reservoir by the employment of a suitable adhesive.

In carrying out my invention I do not limit myself to the employment of rubber as a mal terial for the encircling bands, since it is apparent that the walls of the reservoir may be thickened at the ends and sections of silk or other eXible material may be attached thereto to inclose and retain the ends of the bars.

Having described my invention, what I claim, and desire to secure by Letters Patent, is4

1. In a fountain-pen, an elastic ink-reservoir provided with pockets at the ends, and longitudinal bars of stiff material having their ends inserted within the pockets, substantially as described.

2. In a fountain-pen, an elastic ink-reservoir provided with pockets, and longitudinal bars of stiff material having their ends inserted within the pockets, said bars being secured to the reservoir by cementation, substantially as described.

3. In a fountain-pen, an elastic ink-reservoir provided with adhesive sections of flexible material at the ends, and longitudinal bars arranged upon the reservoir and having their ends inserted beneath said sections of flexible material, substantially as described.

4t. In a fountain-pen, an elastic ink-reservoir provided with adhesive sections of flexible material at the ends, and longitudinal bars of stiff material arranged upon the reservoir with their ends beneath the' sections of flexible material, said bars being secured to the reservoir by cementation, substantially as described.

5. In a fountain-pen, an ink-reservoir of soft rubber having' supplemental bands of soft rubber encircling the same at the ends and forming therewith a homogeneous structure, and bars of stiff material having their ends secured beneath said bands, substantially as described.

In testimony that I claim the foregoing' as my own Iaffix mysignature in presence of two witnesses.

VILLIAM BOLLES.

IIf'itnesses:

CARL H. KELLER, CHAs. C. DEFENBAUGH. 

